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9640bbe1 | 1 | /* Validate a thread handle. |
535b764d | 2 | Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc. |
9640bbe1 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
e2cb5c1d AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
9640bbe1 UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
e2cb5c1d | 14 | Lesser General Public License for more details. |
9640bbe1 | 15 | |
e2cb5c1d AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
9640bbe1 UD |
20 | |
21 | #include "thread_dbP.h" | |
535b764d | 22 | #include <linuxthreads/internals.h> |
9640bbe1 UD |
23 | |
24 | ||
25 | td_err_e | |
26 | td_thr_validate (const td_thrhandle_t *th) | |
27 | { | |
28 | struct pthread_handle_struct *handles = th->th_ta_p->handles; | |
29 | int pthread_threads_max = th->th_ta_p->pthread_threads_max; | |
30 | int cnt; | |
d747a0a5 | 31 | struct pthread_handle_struct phc; |
9640bbe1 | 32 | |
5e67a81b | 33 | LOG ("td_thr_validate"); |
9640bbe1 | 34 | |
547a7a8e UD |
35 | /* A special case: if the program just starts up the handle is |
36 | NULL. */ | |
37 | if (th->th_unique == NULL) | |
d747a0a5 UD |
38 | { |
39 | /* Read the first handle. If the pointer to the thread | |
40 | descriptor is not NULL this is an error. */ | |
41 | if (ps_pdread (th->th_ta_p->ph, handles, &phc, | |
42 | sizeof (struct pthread_handle_struct)) != PS_OK) | |
43 | return TD_ERR; /* XXX Other error value? */ | |
44 | ||
45 | return phc.h_descr == NULL ? TD_OK : TD_NOTHR; | |
46 | } | |
547a7a8e | 47 | |
9640bbe1 UD |
48 | /* Now get all descriptors, one after the other. */ |
49 | for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles) | |
50 | { | |
9640bbe1 UD |
51 | if (ps_pdread (th->th_ta_p->ph, handles, &phc, |
52 | sizeof (struct pthread_handle_struct)) != PS_OK) | |
53 | return TD_ERR; /* XXX Other error value? */ | |
54 | ||
55 | if (phc.h_descr != NULL && phc.h_descr == th->th_unique) | |
56 | { | |
c4103b34 UD |
57 | struct _pthread_descr_struct pds; |
58 | ||
59 | if (ps_pdread (th->th_ta_p->ph, phc.h_descr, &pds, | |
60 | th->th_ta_p->sizeof_descr) != PS_OK) | |
61 | return TD_ERR; /* XXX Other error value? */ | |
62 | ||
9640bbe1 UD |
63 | /* XXX There should be another test using the TID but this is |
64 | currently not available. */ | |
c4103b34 | 65 | return pds.p_terminated != 0 ? TD_NOTHR : TD_OK; |
9640bbe1 UD |
66 | } |
67 | } | |
68 | ||
69 | return TD_ERR; | |
70 | } |